'Fault' in the Bible

"Why then does God still find fault?" you will ask; "for who is resisting His will?"

Let not him who eats certain food look down upon him who abstains from it, nor him who abstains from it find fault with him who eats it; for God has received both of them.

Who are you that you should find fault with the servant of another? Whether he stands or falls is a matter which concerns his own master. But stand he will; for the Master can give him power to stand.

But you, why do you find fault with your brother? Or you, why do you look down upon your brother? We shall all stand before God to be judged;